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Florida. Buggist 

Official Organ of the Florida Entomological Society 


June, 1919 



While collecting insects about two miles southwest of Gaines- 
ville, Florida, during the summer of 1918, the writer found 
numerous specimens of a species of a water-strider in an old 
swamp. A study of this material indicates the insect to be an 
undescribed species of the genus Velia, family Veliidae. The 
species is very closely allied to Velia stagnalis Burm. Mr. W. L. 
McAtee has very Kindly compared a male and female with his 
series of V. stagnalis, collected in the vicinity of Washington, 
D. C. The insect is named in honor of Prof. J. R. Watson, who 
has taken a great interest in Florida insects. 

Velia watsoni new species. 

Head formed as in V. stagnalis Burmeister, the smooth impressed 
median line quite distinct. Eyes globose, strongly faceted. Antennae long 
and slender; basal segment curved, much stronger, also two-sevenths longer 
than the second ; the second a little stronger than the third ; the second, third 
and fourth about equal in length. Pronotum very coarsely punctured, longi- 
tudinally carinate in the middle, produced and rather narrowly rounded 
posteriorly, the tubercles large and prominent. Metapleura with the up- 
ward projecting spines visible from above, located, as in stagnalis, about 
the middle. First and second abdominal segments (dorsal surface) with 
a lateral carina on each side. Legs long and rather stout, the under sur- 
face of femora and tibiae denticulate; length of tarsi and tarsal segment 
proportioned about the same as in stagnalis. Antennae, legs and body 
pilose and setigerous, the hairs along the posterior margin of the pronotum 
becoming rather long. Length, male 4.2 mm. and female 4.1 mm.; width, 
male about 1 mm. and female 1.12 mm. 

Color: General color dark or blackish brown. Legs pale luteous, the 
bands varying from light brown to fuscous. Eyes black. Antennae pale 

•Contributions from the Department of Entomology, New York State College 
of Forestry, Syracuse University, Syracuse, New York. 

We recommend the goods advertised in The Florida Buggist. 
Please mention Buggist when you write our advertisers. 

2 The Florida Buggist 

brown to brown. Pronotum brown, the posterior portion becoming yellow- 
ish brown in the female. Abdomen dark brown, the venter blackish; con- 
nexivum (male) with a yellowish brown spot on the anterior portions of 
each of the last three abdominal segments and the entire connexivum 
lighter with more prominent markings in the female. 

Described from numerous specimens, collected during the summer of 
1918 near Gainesville, Florida. Type and allotype in my collection. Para- 
types in the Florida Experiment Station, Museum of the University of 
Florida and my collection. The eggs are deposited on floating aquatic 
plants and floating sticks or wood just beneath the surface of the water. 
The species is predaceous and lives in stagnant water. The macropterous 
form is unknown. The insect very closely resembles Velia stagnalis Burm. 
from which it may be distinguished by its darker color, the much more 
prominent tubercles in the pronotum and the much longer antennae. The 
first antennal segment in V. watsoni is much longer than the first antennal 
segment in stagnalis, the first segment in the latter and the second seg- 
ment in the former being equal in length. 

Velia stagnalis Burmeister. 

Van Duzee (Cat. Hem. of Amer. North of Mexico) records this species 
from Pennsylvania, District of Columbia, North Carolina and West Indies. 
I have two specimens from Sandusky Bay, Lake Erie (collected by V. R. 
Haber) and four from Rockbridge, Ohio (collected by A. J. Bassinger). 
The Ohio specimens were collected in stagnant water; they agree perfectly 
in form and color with a specimen from District of Columbia that Mr. 
McAtee has kindly presented to me. 



A collection of thrips from Mr. A. C. Mason of Miami, contains 
two new species and a new variety as follows: 

57. Dictyothrips floridensis, n. sp. 

General body color dark brown, legs and antennae light brown. Head 
and thorax deeply reticulated. 

Measurements: Total body length 1.00 mm. Head: length 0.10 mm., 
width 0.15 mm.; prothorax: length 0.11, width 0.16 mm.; mesothorax: 
width 0.24 mm.; metathorax: width 0.20 mm.; abdomen: width 0.23 mm.; 
antennae: segment 1, 24; 2, 40; 3, 50; 4, 40; 5, 48; 6, 58; 7, 16; 8, 24 
microns; total length 0.267 mm. 

Head 1.5 times as broad as long; cheeks strongly arched, sparsely pilose; 
front with a median ridge, extending well forward, forming a right angled 
projection between the antennae. Bristles: two postocular, one in front of 
each posterior ocellus, and a row of four across the frons in front of the 
anterior ocellus; all short, but with bright-colored conspicuous bases. 
Eyes very large, occupying % of both the length and width of the head, 
markedly bulging, sparsely pilose, facets very large. Ocelli very large; 
the posterior pair situated about the middle of the border of the eyes,